/Engine/Source/Runtime/AugmentedReality/Public/ARTypes.h
Represents a hierarchy of a human pose skeleton tracked by the AR system
struct FARSkeletonDefinition
TArray<FName>
JointNames
The name of each joint in this skeleton
int32
NumJoints
How many joints this skeleton has
TArray< int32 >
ParentIndices
The parent index of each joint in this skeleton